physical-activity

• On thin ice

  To be in a risky, precarious, or potentially problematic situation where one is likely to get into trouble or face negative consequences.

• Second wind

  A renewed burst of energy or enthusiasm after a period of fatigue or difficulty.

• Put your back into it

  To apply a great deal of physical effort and energy to a task.

• Stretch your legs

  To take a short walk, often after sitting for a period, in order to relieve stiffness or boredom and get some exercise.